I'm happy C# is adopting more from F#, but only half joking, where are all the comments complaining that new syntax and more operators make code harder to read? Every time there is an article about F#, half the comments are people saying how it has too many operators. Add a few more to C# and every comment is praise.
F# tries to make things too concise. I think it would be more approachable having curly brackets and maybe less inference (or bring great tooling and actual killer features). Love the immutability and non-null default!
Ideal language for me is somewhere between C# and F#. C# is moving there (but F# doesn't).
If you want "actual killer features", they'd by definition be unreadable, since you've never seen them before. I used to think F# was unreadable, then I realized it was those killer features that have no "curly equivalent" that was tripping me up. Once I learned them, it became easier to read.
Before I knew what lambdas were JS was hard to read too, and before I learned inheritance both Java and C# were confusing messes.
And what would F# need to move to? You can type out the types now, you can do all the OO of C#. The only thing I can think you mean is as add curly braces around functions and classes, which wouldn't make it objectively easier to read, just more familiar to some C# developers. Unless you mean add higher kinded types, but that would move it closer to Haskell.
